To see what you store in iCloud on your iPhone, iPad, or iPod touch, tap Settings > [your name] > iCloud > Manage Storage. If you see a category called Others in your iCloud storage, here's what that means.

If you see Others on your iPhone, iPad, or iPod touch

On your iPhone, iPad, or iPod touch, you might see an iCloud storage category called Others. This is a grouping of categories, since a smaller screen can't always fit every category name. For example, Mail and Messages in iCloud might combine into Others on your iPhone, iPad, or iPod touch, but they'll still appear as their true category names on your Mac.*

Others can contain various categories — it depends on what you store in iCloud, and whether you're in a family that shares storage. Usually, your two largest storage categories show their true category names on your iPhone, iPad, or iPod touch, and the rest of your categories group into Others.